In-situ evaluation of predictive models for H₂S gas emission and the performance of optimal dosage of suppressing chemicals in a laboratory-scale sewer

Abdikheibari, Sara, Song, Ho-myon, Cho, Jeong-il, Kim, Sung-jin, Gwon, Su-cheol, Park, Kyoohong, Maluleque, Benildo, Marleni, Nyoman, Shu, Li and Jegatheesan, Veeriah 2016, In-situ evaluation of predictive models for H₂S gas emission and the performance of optimal dosage of suppressing chemicals in a laboratory-scale sewer, International biodeterioration and biodegradation, vol. 106, pp. 25-33, doi: 10.1016/j.ibiod.2015.09.020.

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Title In-situ evaluation of predictive models for H₂S gas emission and the performance of optimal dosage of suppressing chemicals in a laboratory-scale sewer
Author(s) Abdikheibari, SaraORCID iD for Abdikheibari, Sara orcid.org/0000-0002-8617-3687
Song, Ho-myon
Cho, Jeong-il
Kim, Sung-jin
Gwon, Su-cheol
Park, Kyoohong
Maluleque, Benildo
Marleni, Nyoman
Shu, Li
Jegatheesan, Veeriah
Journal name International biodeterioration and biodegradation
Volume number 106
Start page 25
End page 33
Total pages 9
Publisher Elsevier
Place of publication Amsterdam, The Netherlands
Publication date 2016-01
ISSN 0964-8305
Keyword(s) sulfide emission
predictive models
mitigating chemicals
odor suppression
sewer systems
OdaLog
Summary This in-situ analysis quantifies hydrogen sulfide gas emission from a simulated sewerage system, with varying slopes between 0.5% and 1.5%, under the dosing of certain mitigating chemicals. A portable H₂S gas detector (OdaLog) was employed to record the gaseous phase concentration of hydrogen sulfide. The investigation was comprised of three interrelated phases. In the first stage, precision of four prediction models for H₂S gas emission from a laboratory-synthesized wastewater was assessed. It was found that the model suggested by Lahav fitted the experimental results accurately. Second phase explorations included jar tests to obtain the optimal dosage of four hydrogen sulfide suppressing chemicals, being Mg(OH)₂, NaOH, Ca(NO₃)₂, and FeCl₂. In the third stage, the optimal dosage of chemicals was introduced into the experimental sewerage system, with the OdaLog continuously monitoring the H₂S gas emission. According to a baseline (experiments with no chemical addition), it was found that NaOH and Mg(OH)₂ performed very good in mitigating the release of H₂S gas, while Ca(NO₃)₂ was not effective most probably due to the absence of biological activity. Furthermore, interpretation of OdaLog data through the optimum emission prediction model revealed that higher sewer slope led to more emission.
Language eng
DOI 10.1016/j.ibiod.2015.09.020
Field of Research 090409 Wastewater Treatment Processes
Socio Economic Objective 970109 Expanding Knowledge in Engineering
HERDC Research category C1.1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2015, Elsevier
Persistent URL http://hdl.handle.net/10536/DRO/DU:30085454

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